Shoe repairing sole trimmer



Sew. 24, 1940. G. B. McwxLLlAMs snoE REPAIRING soLE IRIMMER Filed June 29, 1939 2 Sheets-Sheet l ATTORNEYS.

Sept. 24, 1940.

cs..` B. McwlLLIAMs f SHOE REPAIRING SOLE 'IRIMMER Filed June 29V, 1939 2 Sheets-Sheet 2 IN V EN TOR.

A TTORNEYS.

Patented sept. 24, 194e I 2,215,557

UNITED STATES ATENT QFFECE snot: REPAIRING soLE TMMMER George Bernard McWilliams, Olney, lll.

Application `lune 29, 1939, Serial No. 282,002

4 Claims. (C1. 12-85) This invention aims to provide a simple means 1 being longer than the upper arm thereof. At for trimming the soles of articles of footwear, its end, the upper arm of the bracket 'I carries a after the soles have been attached to the uppers, vertical standard 8, provided with an opening the machine being adapted, also, for use in cut- 9. On its front side, the standard 3 has a guideting leather and the like into pieces for the way I0. On the front of the standard 8 is loformation of soles. The invention aims'to procated a cover plate Il provided in its opposite vide novel means for reciprocating the element edges with notches I2 adapted to receive buttons whereby the leather is cut. Another object of I pivotally mounted on the standard 8 and opthe invention is to supply novel means whereby erated by means of handles i5, When the butthe cutting element will be prevented from entons I4 are disposed lengthwise of the notches gaging and damaging the upper of the shoe, I2, the cover plate I I can be put on or taken cif, It is within the province of the disclosure to but when the buttons I4 are crosswise of the improve generally and to enhance the utility of notches l2 as shown in Fig. 7, the cover plate is devices of that type to which the present invenheld in place. The removable Cover plate gives 35 tion appertains. access to certain working parts of the machine, 15"

With the above and other objects in view, hereinafter described. which will appear as the description proceeds, The WOIking Darts last abOVe referred t0 nthe invention resides in the combination and elude a Slide I6. mounted t0 reciprocate verarrangement of parts and in the details of con- Cally in the glldeway lll, behind the COVeI plete struction hereinafter described and claimed, it A severing element Il, preferably a SaW, iS 26 being understood that changes in the precise OTmed integrally With the lOWer end of the embodiment of the invention herein disclosed, Slide l5, the SaW being lnOllnled OI reCplOCamay be madev within the scope of what is tion at the end of the upper arm of the bracket i, claimed, without departing from the spirit of the and being IeCeVeCl fOl I'eCDrOCatiOn in a Slot invention I8 formed in the base 4. 25

In the accompanying drawings; As to the means for imparting reciprocation to Fig. 1 shows in front elevation, a device conthe Slide le and the SaW Vl, Fig- 4 ShOWS that structed in accordance with the invention; the slide has a rearwardly pIOJ'eC'ng Stud 20, Fig. 2 is a side elevation; whereon is pivoted a pitman 2l, located in the Fig. 3 is a top plan; opening 9 of the standard 8, and pivoted at its 30 Fig. 4 is a section on the line 4 4 of Fig. 1; upper end on a Wrstpin 22. Secured to a Crank Fig. 5 is a section on the line 5-5 of Fig. 4; disk 23, attached, `in any deSIed Way, t0 the Fig 6 is 2, Section on the une 5 5 of Fig 5; shaft 2d of an electric motor 25, mounted on the Fig. '7 is a perspective view showing the means Upper erm 0f the braekel 'lwhereby the face p1ate is securely hut reieas- The Circuit conductors 2e fer the motor 25 35 ably held in place; extend into the base d and are connected to Fig 3 is a, Section on the line s of Fig 5; resilient switch tongues 2l secured within the Fig 9 is a Section on the 1in@ 9 9 of Fig 2; base 4, the switch tongues being normally spaced Figs. 10 and 11 are sectional views iuustratapart. and the meter Circuit beine open. A caring the operation of the spacer which holds the rier 28 is mounted for vertical movement in the 40 saw spaced from the upper of the shoe. The lower erm 0f the bmekelf l, es Fg- 3 SllOWS, numeral g marks a Support, Such as a, Work and is located closely adjacent to the saw I'I, a table, having avertical opening 2, receivinga delittle in front 0f the SeW, eS ShOWn in Fig. 2. pending pivot, element 3 on one end 0f 3, base 4, In the CaIIlel 23, a. IOHSI' 23 iS joul'naled. The

the pivot element having a collar 5 which spaces Carrier 28 and the roller 29 are raised by a 45 the base tl from the support l, Near its rear compression spring 30 (Fig. 8) located within the end, the base d is supplied with castors 6, base 4 and insulated at 32 from the carrier. The adapted to n311 on the support l- The entire upward movement of the carrier 23 and the structure hereinafter described may be swung roller 29 is limited by a ange 3l on the carrier readily about a vertical axis, represented by the 28 and engaging the lower arm of the bracket 50 pivot element 3, to position the machine propl. The inSulalOIl 32 fOr the Splng 3U engages erly, as light conditions and the nature of the the upper tongue of the switch 21. work in hand may demand. The sole 33 (Figs. 10 and 11) which is attached The lower arm of a U-shaped bracket 'I is seto the shoe upper 34 may Vary in thickness, and Cured t0 the base 4, Jthe lOWeI arm 0f the bracket in order to prevent vertical movement of the shoe 55 sole, whilst the saw l1 is working, a vertically adjustable presser foot mechanism is provided. It is desirable, also, to space the saw l1 horizontally from the shoe upper 34, whilst the sole 33 is being trimmed, in order that the upper may not be cut by the saw. The presser foot mechanism, therefore, is adjustable horizontally. Sometimes, as shown in Fig. 10, the shoe may have a welt 35, for engagement with the presser foot and guiding mechanism, and, again, as shown in Fig. 1l, if the shoe has no welt, the upper 34 is pushed inwardly over the insole 35, and, then, the guiding and spacing and presser foot mechanism is engaged with the upper 34, at the edge of the insole 36. In any event, as shown in Figs. 10 and l1, there is no opportunity for the shoe to be pushed to the right in Figs. l and l1, until the upper 34 is cut by the saw ll.

As to the mechanism last above referred to, it will be observed that an adjusting device, such as a lever 3l, is located behind the standard 8, and is fulcrumed at one end, as indicated at 38, on the standard. Near its free end, as shown .in Fig. 6, the lever 3l has a tooth 3S, the lever being resilient enough so that this tooth can be engaged with a rack plate 4G on one edge of the standard 8.

Into the lever 3l is threaded a headed adjusting screw Lil, held for rotation but against longitudinal movement in forks at the upper end of a slide 42, mounted for vertical adjustment and for horizontal adjustment from front to back in an opening 43 formed in the upper arm of the bracket 7. At its lower end, the slide 42 has a horizontal presser foot 44, adapted to bear on or engage the upper surface of the sole 33. The vertical adjustment of the foot 44 is brought about by swinging the lever 3l up and down, and engaging the tooth 38 with the rack plate lill. rIhus, shoe soles of different thicknesses maybe accommodated readily. As shown in Fig. 4, the upper arm of the bracket 'l is recessed at 45, to receive the presser foot 44, when the slide 2 is raised. rIhe slide 42 has a forwardly extended spacing tongue 4G, mounted for vertical adjustment in an opening 4l formed in the cover plate l I, and in the upper arm of the bracket l, as shown in Fig. l. The end of the spacing tongue 46 is adapted to ride against the upper 34 as in Fig. ll, or against the welt 35, as in Fig. 10, and, thus,. the saw ll is held spaced, horizontally, from the upper 34.

In practical operation, the shoe is mounted in place as shown in Figs. 10 and 11, the tongue 46 engaging either the upper 34 as in Fig. 11, or the welt 25 as in Fig. l0, to space the saw l1 from the upper 34. Reciprocaticn is imparted to the saw l'l from the motor 25 by the crank disk 23, the pitman 2| of Fig. 4, and associated parts. When the shoe is shifted with respect to the reciprocating saw Il, the edge of the sole 33 will be trimmed on' properly. Horizontal adjustment of the spacing tongue 45 is brought about by turning the adjusting screw 4I, the slide 42 and associated parts being shifted horizontally.

When the shoe is mounted in place, as indicated n Figs. l0 and 1l, the shoe comes into contact with the roller 29, the carriage 28 is shoved downwardly, the switch tongues 21 are closed together, and the circuit 28 for the motor 25 is closed. The motor 25, therefore, is put into operation so soon as the shoe is placed for cutting, and when the shoe is removed, the circuit 26 is opened, and the motor 25 ceases to reciprocatey the slide I6 and the saw I1.

It is desirable to sustain the upper and lower arms of the bracket l, so that, by no possibility, can the upper arm of the bracket spring vertically with respect to the lower arm. With this end in mind, a brace block 48, shown best in Fig. 9, is introduced between the upper and lower arms of the bracket l. A wedge 49 is slidably mounted in the brace block 48 and is adapted to engage the lower arm of the bracket 1. The wedge 49 is moved in and out by an adjusting screw 50, threaded into the wedge 49 and held for rotation, but against endwise movement, in the block 48. It can be seen that by advancing the wedge 49, the brace block 48 and the wedge will-be made thoroughly effective to sustain the upper arm of the bracket l.

The brace block 48 and the wedge 49 have another and important function. It will be noted, referring to Fig. 1, that the upper arm of the bracket 'I is provided upon one edge with a scale l. The brace block 48 can be placed anywhere along the scale 5l and be held by advancing the wedge 49 through the instrumentality o the screw 50. When the brace block 48 is properly positioned, pieces of sole material can be cut before they are attached to the shoe, the edge of the material riding along the front surface of the brace block d8, and the saw il' being recprocated.

The operation of the device has been set forth hereinbefore, in connection with the various component parts of the machine, but by way of recapitulation, it will be understood that the sole is trimmed by means of the reciprocating saw l1. Sole leather of a diierent thickness is accommodated by adjusting the slide 42 and the presser foot 44, through the instrumentality of the lever 3l. The horizontal adjustment of the slide 42 and the spacing tongue 46 is brought about by rotating the screw 4| of Fig. 6. The brace block and guide 48 can be moved anywhere along the scale 5i and be held in adjusted position by means of the wedge 49. The motor circuit 26 is opened and closed without any attention on the part of the operator, other than placing the sole of the shoe on the roller 29 of Fig. 8.

Referring to Figs. 8 and 2 of the drawings, it will be noted that a latch 52 is provided, the latch preferably being in the form of a headed pin, mounted for right-line sliding movement in the end of the lower arm of the bracket l. Figure 8 shows that the carrier 28 is supplied with a seat, shaped for the reception of the inner end of the latch 52. The operator can depress the carrier 28 to close the switch 21 and energize the motor 25. The latch 52 is advanced into engagement with the seat of the carrier 28, and since the carrier cannot rise, responsive to the thrust of the spring 38, the switch 2 remains closed, and the motor 25 energized, so long as a continuous operation of the machine is desired.

Having thus described the invention, what is claimed is:

l. In a mechanism for trimming shoe-sole material, a frame, a sole-trimmer movably mounted on the frame, a member comprising a presser foot and a lateral spacer, mechanism for adjusting said member longitudinally, to cause the presser foot to cooperate with sole material of diiferent thicknesses, and mechanism for adjusting said member transversely, to cause the spacer to engage a part of the shoe and hold the trimmer out of engagement with the upper of a shoe whilst the trimmer is operating on the sole of the shoe, the last specified mechanism comprising a lever fulcrumed on the frame, and means for pivoting said member to the lever, the lastspecied means being a screw forming a threaded connection between said member and the lever.

2. In a machine for trimming shoe-solematerial, a frame, a sole-trimmer movably mounted on the frame, a member comprising a presser foot and a lateral spacer, mechanism foradjusting said member longitudinally, to cause the presser foot to cooperate with sole material of different thicknesses, and mechanism for adjusting said member transversely, to cause the spacer to engage the part of a shoe and hold the trimmer out of engagement with the upper of a shoe, whilst the trimmer is operating on the sole of the shoe, the last specified mechanism comprising a lever fulcrumed on the' frame, and means for mounting said member on the lever pivotally and for adjustment transversely of the lever.

3. In a machine for trimming shoe-sole material, a U-shaped member having upper and lower arms, the upper arm being provided with an upwardly projecting standard, a trimmer slidably mounted on the standard and in the lower arm, a motor mounted on the upper arm, mechanism for connecting the motor operatively with the trimmer, a circuit for the motor, and a switch interposed in said circuit, the switch being mounted on the lower arm of said member and being engageable by a shoe, to open and close the circuit, when the shoe is positioned to be operated upon the trimmer.

4. In a machine for trimming shoe-sole material, a U-shaped member having upper and lower arms, a trimmer mounted to reciprocate with respect to said member, one of the arms having a longitudinal scale, an edge sto-p disposed between the arms and having an index'cooperating with the scale to aid in positioning the edge stop, and means for holding the edge stop in adjusted positions longitudinally of the scale, the edge stop constituting, also, a brace preventing relative transverse movement between the arms when the trimmer is reciprocated.

GEORGE BERNARD MCWILLIAMS. 

